PCSAFTFluid.cpp

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#include <string>
#include <vector>
#include <cmath>
 
#include "CoolProp/fluids/PCSAFTFluid.h"
 
namespace CoolProp {
 
void PCSAFTFluid::calc_water_sigma(double t) {
    if (t > 473.16) {
        throw ValueError("The current function for sigma for water is only valid for temperatures below 473.15 K.");
    } else if (t < 273) {
        throw ValueError("The current function for sigma for water is only valid for temperatures above 273.15 K.");
    }
 
    params.sigma = 3.8395 + 1.2828 * exp(-0.0074944 * t) - 1.3939 * exp(-0.00056029 * t);
}
 
} /* namespace CoolProp */